Wash the potatoes, bring to the boil covered with water and cook for about 20 minutes. Drain potatoes, quench, peel and let cool off. Clean and wash radishes and cut into thin slices. Cut cucumbers into thin slices. Cut mortadella into sticks. Wash the chives and, except for something to garnish, cut into small rolls. Dice potatoes.
Mix yoghurt and mayonnaise. Season with salt and pepper. Mix all the ingredients and let it stand. Clean, wash and drain the salad leaves. Put the lettuce leaves on plates and arrange the potato salad on top. Garnish with chives